Double walled cup



FIG. 1 is a perspective view of a double walled cup, showing my newdesign;

FIG. 2 is a side view thereof, the other side views being identical;

FIG. 3 is a perspective, cross-sectional view thereof, taken along line3-3 in FIG. 5;

FIG. 4 is a cross-sectional view thereof, taken along line 4-4 in FIG.5;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

CLAIM The ornamental design for a double walled cup, as shown anddescribed.